Pub Date : 1900-01-01DOI: 10.5455/egysebz.20220907064204
Z. Attia, Hala Abdelazem, Iman Nada
The effect of hypoxia and reoxygenation on Nile tilapia (Oreochromis niloticus) was studied. The fish were exposed to hypoxic oxygen concentrations (2 and 0.5 mg O2 L-1) for 1 day (short term) and 30 days (long term) followed by reoxygenation for 1 day and 7 days, respectively. The activities of superoxide dismutase (SOD), catalase (CAT) and glutathione S-transferase (GST) significantly decreased in the gills of all the hypoxic groups after both short and long term of hypoxia exposures, while increased significantly below control levels after reoxygenation except that the activities of SOD and GST in the reoxygenated groups pre-exposed to short-term (2 mg O2 L-1), SOD activity in the reoxygenated group pre-exposed to long-term (0.5 mg O2 L-1), and the activities of CAT and GST in all the reoxygenated groups pre-exposed to long-term hypoxia, had no significant change compared to their respective hypoxic groups. The activities of glutathione peroxidase (GPx), glutathione reductase (GR) and xanthine oxidase (XO) significantly increased during hypoxia then decreased significantly after reoxygenation except for GPx activity in the reoxygenated group pre-exposed to short-term (2 mg O2 L-1). Malondialdehyde (MDA) concentrations significantly increased in all the hypoxic and reoxygenated groups compared to their respective controls. The significance of these alterations in enzyme activities and oxidative stress indices is discussed. In conclusion, hypoxia and subsequent reoxygenation induce oxidative stress in Oreochromis niloticus gills causing depletion of some antioxidant enzymes. Long-lasting oxidative stress can delay full recovery.
{"title":"Effect of hypoxia and reoxygenation on antioxidant system in gills\u0000of tilapia fish (Oreochromis niloticus)","authors":"Z. Attia, Hala Abdelazem, Iman Nada","doi":"10.5455/egysebz.20220907064204","DOIUrl":"https://doi.org/10.5455/egysebz.20220907064204","url":null,"abstract":"The effect of hypoxia and reoxygenation on Nile tilapia (Oreochromis niloticus) was studied. The fish were exposed to hypoxic oxygen concentrations (2 and 0.5 mg O2 L-1) for 1 day (short term) and 30 days (long term) followed by reoxygenation for 1 day and 7 days, respectively. The activities of superoxide dismutase (SOD), catalase (CAT) and glutathione S-transferase (GST) significantly decreased in the gills of all the hypoxic groups after both short and long term of hypoxia exposures, while increased significantly below control levels after reoxygenation except that the activities of SOD and GST in the reoxygenated groups pre-exposed to short-term (2 mg O2 L-1), SOD activity in the reoxygenated group pre-exposed to long-term (0.5 mg O2 L-1), and the activities of CAT and GST in all the reoxygenated groups pre-exposed to long-term hypoxia, had no significant change compared to their respective hypoxic groups. The activities of glutathione peroxidase (GPx), glutathione reductase (GR) and xanthine oxidase (XO) significantly increased during hypoxia then decreased significantly after reoxygenation except for GPx activity in the reoxygenated group pre-exposed to short-term (2 mg O2 L-1). Malondialdehyde (MDA) concentrations significantly increased in all the hypoxic and reoxygenated groups compared to their respective controls. The significance of these alterations in enzyme activities and oxidative stress indices is discussed. In conclusion, hypoxia and subsequent reoxygenation induce oxidative stress in Oreochromis niloticus gills causing depletion of some antioxidant enzymes. Long-lasting oxidative stress can delay full recovery.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"17 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134139087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20230201023633
Ahmed Abada
Quantitative and qualitative responses of subtropical benthic freshwater nematodes to changing water levels (low versus high) have not been considered before. Three distinct locations with different depths in two freshwater channels (Rowaina and Shalma) of the northern Nile delta had been chosen for this purpose. Low and High-water levels (LWL & HWL) were in January and July 2019 respectively. Nematode abundance and diversity were significantly different between water levels, locations, and their interactions. They were categorized into six feeding groups in both water levels, locations and channels (bacterivores, plant ectoparasites, fungivores, Nematovorous, omnivorous, and predators). However, bacterivorous and omnivorous disappeared during HWL in Rowaina channel. The relative dominance of the feeding groups differed between water levels, localities, and channels. Dominancy was generally higher in Shalma. Diversity pattern in Rowaina contrasted that of Shalma. Environmental variables differently influenced nematode community. It could be concluded that water level fluctuation was not the only factor determining benthic nematode abundance, diversity, and trophic categorization. Specific water body conditions affect benthic nematode community structure. Nematode communities are environmentally sensitive agent. Furthermore, the current findings might improve our understanding of aquaculture, as water level fluctuations affect benthic nematodes, which directly or indirectly affect the reared organisms.
{"title":"Subtropical benthic freshwater nematode response to Low versus High water level alteration","authors":"Ahmed Abada","doi":"10.5455/egysebz.20230201023633","DOIUrl":"https://doi.org/10.5455/egysebz.20230201023633","url":null,"abstract":"Quantitative and qualitative responses of subtropical benthic freshwater nematodes to changing water levels (low versus high) have not been considered before. Three distinct locations with different depths in two freshwater channels (Rowaina and Shalma) of the northern Nile delta had been chosen for this purpose. Low and High-water levels (LWL & HWL) were in January and July 2019 respectively. Nematode abundance and diversity were significantly different between water levels, locations, and their interactions. They were categorized into six feeding groups in both water levels, locations and channels (bacterivores, plant ectoparasites, fungivores, Nematovorous, omnivorous, and predators). However, bacterivorous and omnivorous disappeared during HWL in Rowaina channel. The relative dominance of the feeding groups differed between water levels, localities, and channels. Dominancy was generally higher in Shalma. Diversity pattern in Rowaina contrasted that of Shalma. Environmental variables differently influenced nematode community. It could be concluded that water level fluctuation was not the only factor determining benthic nematode abundance, diversity, and trophic categorization. Specific water body conditions affect benthic nematode community structure. Nematode communities are environmentally sensitive agent. Furthermore, the current findings might improve our understanding of aquaculture, as water level fluctuations affect benthic nematodes, which directly or indirectly affect the reared organisms.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130782609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/EGYSEBZ.20190425010119
Menna M. Harby, Elsie Rizk, Ibraheem Shourbagy, M. Bassiouny, M. Wafik
This study was conducted to evaluate the effect of flaxseed oil as a source of omega 3 and salinity factor on growth and some enzyme activity Nile tilapia (Oreochromis niloticus) (mean initial weight 1.18 ± 0.1 g ) in indoor recycle aquarium tanks for 45 days. Results showed that adding flaxseed oil and salinity factors did not alter negatively the growth rate of Nile tilapia. Also, our data showed that fish in salinity group exhibited higher aspartate transaminase and alanine transaminase activities in liver while decreased in the flaxseed oil groups in comparison with the control. In conclusion, rearing Nile tilapia in brackish water can be a viable substitute to fresh water in Nile tilapia aquaculture without affecting the growth of tilapia. Moreover, flaxseed oil could be a viable substitute to the fish oil in Nile tilapia aquaculture without affecting the growth of tilapia. Most importantly, salinity factor can improve some enzyme activities such as ALT and AST in liver of Nile tilapia. .
{"title":"Impact of salinity and flaxseed oil -enriched diet on growth and some enzyme\u0000activity of Nile tilapia Oreochromis niloticus","authors":"Menna M. Harby, Elsie Rizk, Ibraheem Shourbagy, M. Bassiouny, M. Wafik","doi":"10.5455/EGYSEBZ.20190425010119","DOIUrl":"https://doi.org/10.5455/EGYSEBZ.20190425010119","url":null,"abstract":"This study was conducted to evaluate the effect of flaxseed oil as a source of omega 3 and \u0000salinity factor on growth and some enzyme activity Nile tilapia (Oreochromis niloticus) (mean initial weight 1.18 ± 0.1 g ) in indoor recycle aquarium tanks for 45 days. Results showed that adding flaxseed oil and salinity factors did not alter negatively the growth rate of Nile tilapia. Also, our data showed that fish in salinity group exhibited higher aspartate transaminase and alanine transaminase activities in liver while decreased in the flaxseed oil groups in comparison with the control. In conclusion, rearing Nile tilapia in brackish water can be a viable substitute to fresh water in Nile tilapia aquaculture without affecting the growth of tilapia. Moreover, flaxseed oil could be a viable substitute to the fish oil in Nile tilapia aquaculture without affecting the growth of tilapia. Most importantly, salinity factor can improve some enzyme activities such as ALT and AST in liver of Nile tilapia. .","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123659479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20220211081712
H. Elbrense, M. Aasr
{"title":"Insecticidal activity of four essential oils against the German, Blattella germanica (L.) and the American, Periplaneta americana (L.) cockroaches","authors":"H. Elbrense, M. Aasr","doi":"10.5455/egysebz.20220211081712","DOIUrl":"https://doi.org/10.5455/egysebz.20220211081712","url":null,"abstract":"","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125160839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20220803073155
A. Marei, Doaa Mahmoud
Diabetic nephropathy (DN) is considered a clinical syndrome, which is a diabetic kidney disease characterized by increasing blood pressure, albuminuria, and chronic kidney disease. The current study aimed to determine the effect of sweetener (Stevia rebaudiana ) on diabetic nephropathy in a diabetic rat model. Four groups (n=7) of male albino rats (Rattus norvegicus): the control group, diabetic control group (induced streptozotocin intraperitoneally), two diabetic rat groups treated with 2 doses of stevia (200 and 400 mg/kg body weight) for 4 weeks. Biomarkers of nephropathy were measured in plasma and kidneys at the end of the experiment. The levels of plasma glucose, urea, uric acid, creatinine, renal malondialdehyde (MDA), and caspase-3 significantly increased in diabetic rats and levels of insulin, renal catalase, superoxide dismutase, and vascular endothelial growth factor A (VEGF-A) were significantly decreased. After treating the diabetic rats with natural sweetener (stevia), the kidney and plasma biochemical parameters were improved significantly. These results indicated the major role of stevia in diabetic nephropathy.
{"title":"The effect of stevia sweetener on diabetic nephropathy in rats","authors":"A. Marei, Doaa Mahmoud","doi":"10.5455/egysebz.20220803073155","DOIUrl":"https://doi.org/10.5455/egysebz.20220803073155","url":null,"abstract":"Diabetic nephropathy (DN) is considered a clinical syndrome, which is a diabetic kidney disease characterized by increasing blood pressure, albuminuria, and chronic kidney disease. The current study aimed to determine the effect of sweetener (Stevia rebaudiana ) on diabetic nephropathy in a diabetic rat model. Four groups (n=7) of male albino rats (Rattus norvegicus): the control group, diabetic control group (induced streptozotocin intraperitoneally), two diabetic rat groups treated with 2 doses of stevia (200 and 400 mg/kg body weight) for 4 weeks. Biomarkers of nephropathy were measured in plasma and kidneys at the end of the experiment. The levels of plasma glucose, urea, uric acid, creatinine, renal malondialdehyde (MDA), and caspase-3 significantly increased in diabetic rats and levels of insulin, renal catalase, superoxide dismutase, and vascular endothelial growth factor A (VEGF-A) were significantly decreased. After treating the diabetic rats with natural sweetener (stevia), the kidney and plasma biochemical parameters were improved significantly. These results indicated the major role of stevia in diabetic nephropathy.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124995775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20190630042451
Mohamed A. Basyony, Nabila Desouki, W. Abdo, R. A. Hegazy, Yasser M. Mohamed
{"title":"Melatonin improves the anticancer effects of mesenchymal \u0000stem cell against HCC in rat","authors":"Mohamed A. Basyony, Nabila Desouki, W. Abdo, R. A. Hegazy, Yasser M. Mohamed","doi":"10.5455/egysebz.20190630042451","DOIUrl":"https://doi.org/10.5455/egysebz.20190630042451","url":null,"abstract":"","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124505502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20210723020047
A. Gaballa, H. Swelim, A. Aal, S. Eldawlatly
{"title":"Neuroprotective Effect of Chrysin in Rat Model of Parkinsons Disease: Histopathological Evidence","authors":"A. Gaballa, H. Swelim, A. Aal, S. Eldawlatly","doi":"10.5455/egysebz.20210723020047","DOIUrl":"https://doi.org/10.5455/egysebz.20210723020047","url":null,"abstract":"","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116395247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20220507065051
E. Kandil, Y. Okdah, Ayat Moselhy
Doxorubicin is antibiotics anticancer drug which proved to be useful in treatment of cancer, but it has bad effect on healthy body organs. Thymus vulgaris (thyme) cultivated around the world for cosmetic, cooking, and medical uses. So, the present work aims to investigate the possible ameliorating effect of thyme oil on renal toxicity induced by doxorubicin. Adult female albino rats (Rattus norvegicus) were randomly divided into four groups (5 rats/group): control group, thyme group received orally 0.5 mL thyme oil/kg body weight once/week for 6 consecutive weeks, doxorubicin group received intraperitoneally 2 mg doxorubicin/kg body weight once/week for 6 consecutive weeks, and doxorubicin + thyme group received both doxorubicin and thyme oil once/week for 6 consecutive weeks. A significant rising in urea and creatinine level in the sera of rats injected with doxorubicin was recorded. Moreover, their kidney sections showed degenerated, vacuolated and little hemorrhage glomeruli, abnormal renal tubular cells, aggregation of mononuclear leucocytes and hyaline cast. Ultrastructure examination showed degenerated glomerular endothelial, untypical filtrating barrier, degenerated podocyte, mesangial cell, pathological proximal and distal tubular cell with damage microvilli. Treating rats with thyme oil after doxorubicin decreases the elevated levels of urea and creatinine. The glomeruli, Podocyte, intraglomerular mesangial cells and glomerular filtration barrier approximately restored its typical structure, the winding in Bouma’s space is disappeared. Most tubular cells have normal nuclei and cytoplasm. Thyme oil can improve renal functions, histological and ultrastructural changes induced by doxorubicin. So, it can be used to decrease its side effect on kidney. Keywords: Doxorubicin, Histology, Ultrastructure, Thyme oil, urea, creatinine.
阿霉素是一种抗菌素抗癌药，在治疗癌症方面有较好的效果，但对健康的身体器官有不良影响。世界各地种植的百里香，用于化妆品、烹饪和医疗用途。因此，本研究旨在探讨百里香油对阿霉素所致肾毒性的可能改善作用。将成年雌性褐家鼠(Rattus norvegicus)随机分为4组(5只/组):对照组、百里香组口服百里香油0.5 mL /kg体重1次/周，连续6周;阿霉素组腹腔注射阿霉素2 mg /kg体重1次/周，连续6周;阿霉素+百里香组同时服用阿霉素和百里香油1次/周，连续6周。大鼠注射阿霉素后血清尿素和肌酐水平明显升高。肾切片示肾小球变性、空泡化、少量出血，肾小管细胞异常，单核白细胞聚集，铸型透明。超微结构检查显示肾小球内皮变性，滤过屏障不典型，足细胞、系膜细胞变性，近端和远端小管细胞病理性，微绒毛受损。用百里香油治疗阿霉素后降低了尿素和肌酐的升高水平。肾小球、足细胞、肾小球系膜细胞及肾小球滤过屏障大致恢复其典型结构，鲍氏间隙内的缠绕消失。大多数小管细胞有正常的细胞核和细胞质。百里香油能改善阿霉素所致肾功能及组织超微结构的改变。因此，它可以用来减少其对肾脏的副作用。关键词:阿霉素，组织学，超微结构，百里香油，尿素，肌酐。
{"title":"Histological, ultrastructural, and biochemical studies on the expected role of thyme oil on ameliorating renal toxicity induced by doxorubicin in female albino rats","authors":"E. Kandil, Y. Okdah, Ayat Moselhy","doi":"10.5455/egysebz.20220507065051","DOIUrl":"https://doi.org/10.5455/egysebz.20220507065051","url":null,"abstract":"Doxorubicin is antibiotics anticancer drug which proved to be useful in treatment of cancer, but it has bad effect on healthy body organs. Thymus vulgaris (thyme) cultivated around the world for cosmetic, cooking, and medical uses. So, the present work aims to investigate the possible ameliorating effect of thyme oil on renal toxicity induced by doxorubicin. Adult female albino rats (Rattus norvegicus) were randomly divided into four groups (5 rats/group): control group, thyme group received orally 0.5 mL thyme oil/kg body weight once/week for 6 consecutive weeks, doxorubicin group received intraperitoneally 2 mg doxorubicin/kg body weight once/week for 6 consecutive weeks, and doxorubicin + thyme group received both doxorubicin and thyme oil once/week for 6 consecutive weeks. A significant rising in urea and creatinine level in the sera of rats injected with doxorubicin was recorded. Moreover, their kidney sections showed degenerated, vacuolated and little hemorrhage glomeruli, abnormal renal tubular cells, aggregation of mononuclear leucocytes and hyaline cast. Ultrastructure examination showed degenerated glomerular endothelial, untypical filtrating barrier, degenerated podocyte, mesangial cell, pathological proximal and distal tubular cell with damage microvilli. Treating rats with thyme oil after doxorubicin decreases the elevated levels of urea and creatinine. The glomeruli, Podocyte, intraglomerular mesangial cells and glomerular filtration barrier approximately restored its typical structure, the winding in Bouma’s space is disappeared. Most tubular cells have normal nuclei and cytoplasm. Thyme oil can improve renal functions, histological and ultrastructural changes induced by doxorubicin. So, it can be used to decrease its side effect on kidney.\u0000Keywords: Doxorubicin, Histology, Ultrastructure, Thyme oil, urea, creatinine.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114744349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20190723094132
and kasheif
{"title":"Histopathological alterations of submandibular salivary glands in Experimental Animal Albino Rat Induced by excess vitamin A","authors":"and kasheif","doi":"10.5455/egysebz.20190723094132","DOIUrl":"https://doi.org/10.5455/egysebz.20190723094132","url":null,"abstract":"","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.5455/egysebz.20210608120218
R. Riad
Squids are known to be commercially important around the world. Worth mentioning it constitutes a major part of the Egyptian fishing industry. This study aims to differentiate between the teuthoid species dwelling in the Egyptian Mediterranean waters. Squid Specimens were obtained from the fishing trawlers. The specimens were photographed by a CanonG7X digital Camera and the different organs were illustrated using a zoom stereoscopic WildM8 microscope provided with its special Camera Lucida drawing tube.
{"title":"Comparative taxonomical studies on the Egyptian Mediterranean Squids","authors":"R. Riad","doi":"10.5455/egysebz.20210608120218","DOIUrl":"https://doi.org/10.5455/egysebz.20210608120218","url":null,"abstract":"Squids are known to be commercially important around the world. Worth mentioning it constitutes a major part of the Egyptian fishing industry. This study aims to differentiate between the teuthoid species dwelling in the Egyptian Mediterranean waters. Squid Specimens were obtained from the fishing trawlers. The specimens were photographed by a CanonG7X digital Camera and the different organs were illustrated using a zoom stereoscopic WildM8 microscope provided with its special Camera Lucida drawing tube.","PeriodicalId":342785,"journal":{"name":"THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology)","volume":"21 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121000594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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